A person that is inclined toward the act of analingus. Commonly used in association with boys - and girls - that derive extreme pleasure and uncontained excitement from tossing salad. Also known to be used in reference to certain individuals that come down with Hepatitis of the A complex or oral herpes.

Did you see that girls ass?? Hell, I would become a full-time bottom-fisher if she was my girl.

Tony, did you hear that Ralphie came down with a case of the Hep-A. I am not surprised, he is a notorious bottom-fisher.